Gage.



No 845,258. PATENTED FEB. 26, 1907.-

A. B. PRICE.

GAGE.

APPLICATION FILED SBPT.11, 1906.

a new and useful Gage, of

boiler.

UNITED. STATES PATENT OFFICE.

ANDERSON BITTLE PRICE, OF VICAR SWITCH, VIRGINIA.

GAGE.

Specification of Letters Patent.

Patented Feb. 26, 1907.

Application filed September 11, 1906- Serial No. 334,157.

To all whom it'ntcty concern.-

Be it knownv that I, ANDERSON BITTLE PRICE, a citizen of the UnitedStates, residing at Vicar Switch, in the county of Montgomery and Stateof Virginia, have invented which the followingisa specification.

' This invention relates generally to watergages for boilers, andparticularly to that class of such devices which is provided with meansfor preventing injury due to the bursting of a gage-tube.

The objects of the invention are to improve and simplify theconstruction of such devices, furthermore, to increase their efiic encyin operation and to decrease the expense attending their manufacture.

With the foregoing and other objects in view, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in theprecise'embodiment of invention heredisclosedcan be made within thescope of the following claims without departing from .the spirit of theinvention or sacrificing any ofits advantages.

In the accompanying drawings, formingv part of this specificatlon,Figure 1 is a side elevation of a gage constructed inaccordance with theresent invention. Fig; 2 is-a vertical sect1on.' Fig. 3 is a horizontalsection-'- through the middle of the gage.

Like reference -"numerals indicate corresponding parts in the differentfigures of the drawings.

The improved gage of the present invsr tion is provided with a lowerpipe-section 1,

which is formed with a longitudinal bore 2 of sufficient size to receivein a loose manner the lower end of a glass gage-tube 3. The lowerpipe-section 1 is formed exteriorly, ad jacent the lower end thereof,with threads. 4 and is adjustably fitted into the upper end of a pipe 5,which communicates with the Intermediate its ends the lower pipesection1 is formedwith'a collar 6, and above said collar the pipe-section isformed with a smooth upper end 7 The smooth upper end '7 of thepipe-section 1 is ad apted to fit into an annular packing-chamber 8,formed in the lower member of a gage-shield, which is indicatedgenerally by 10. Leading out of the upper end of the annularaching-chamber 8 is abore 11, through whic the gage-tube 3 ing adaptedto receive the smoothlower end 7 of an upper pipe-section 14, which isformed with a-collar 6 and threads i'to engage an upper pipe 5, whichleads into the boiler. The upper member 13 of the gageshield 10 isformed in each of its flat faces with an undercut groove 15. The lowerand upper members 9 and13 are connected with each other by a pluralityof rods 16,'Which, as shown in Fig. 3, preferably are approximatelydiamond shape in cross-section and radiate with respect to the gage-tube3,the inner ends 17 of said rods being preferably in contact with thegage-tube 3, soas to brace the same. The rods 16 may be either formedintegral with theend members 9 and 13, as shown,.or they may be suitablysecured to said end members Eachv of the rods 16 preferably is formedwith a pair of grooves 18, which act as guideways to receive glassprotecting plates 19. In the event that the gage-tube 3 should burstunder eX cessive pressure the protecting-plates 19 will prevent thescattering of the pieces of glass. For the purpose of draining theshield 10 in the event that any water should enter the same the lowermember 9 is formed with a plurality'of inclined drain-passages 20.

Whenever it is necessary to supply a new gage-tube 3, the lowerpipe-section 1 is screwed downward into the pipe 5 and the having awasher or packing-ring 12 and beupper pipe-section .14 is-screwed upwardinto'tlieupper pipe 5, so that said pipe-sections 1 and 14 becomedisengaged from the lower and upper members 9'and 13 of the gage-shield10. This disengagement of the pipe-sections removes the compression fromthe packing-rings 12 and permits the insertion of. a new gage-tubethrough the bores 1 1 of the upper and lower members, after which theshield 10 can-be replaced between the pipe-sections 1 and .14, andsaid-sections can be screwed together in erder again to compress thepacking-rings 12 and hold the shield 10 securely in position.

It will be apparent from Fig. 2 that the collar 6 of the upperpipe-section 14 projects over the upper ends of the protecting-plates19, for which reason, when the parts are assembled, it will beimpossible to move the protecting-plates 19 upward out of theirguideways. i

The improved gage of the present invention'is strong, simple, durable,and inexpen sive in construction, as well as thoroughly eflicient inoperation.

While a shield of square cross-section has been depicted in the presentinstance, it is to be understood that the shape can be changed to suitany given requirement and that one or more glass plates 19 maybeemployed.

What iselaimed is- I 1. A device of the character described comprisingupper and lower pipe-sections each having a longitudinal bore, a collarand a smooth upper end, a shield comprising upper and lower members eachhaving a bore and a packing-chamber adapted to receive the smooth upperend of one of said pipe-sections, said upper member having undercutgrooves, rods connecting said upper and lower members and having groovesthereinforming guideways, transparent plates extending down through theundercut grooves of the upper member and. through the guide- 1 Ways ofsaid rods, a gage-tube extending through said upper and lower membersand projecting loosely at its upper and lower ends eeaaee into the boresof said upper and lower pipe sections, and packing-rings surroundingsaid gage-tube and disposed in said packing chamber, said gage-tubebeing in Contact with the inner ends of said rods.

2. 'A guard for water-gages said guard haw ing longitudinally-disposedopenings therein gradually diminishing in width toward their inner ends,said inner ends being'adapted to be closed by a gage-tube, and atransparent plate closing the outer end of each opening.

3. A device of the character described comprising tubulargage-tube-receiving devices, connections between said devices adapted tocontact throughout their lengths with and to reinforce a gage-tube, andtransparent plates secured to and closing the spaces between, theconnections to completely inclose the tube.

4. A device of the character described 0011b prising tubulargage-tube-receiving devices, connections between said devices adapted tocontact throughout their lengths with and to:

reinforce a gage-tube, and transparent plates.

secured to and closing the spaces between,

the connections to completely inclose the tube, one of thegage-tube-receiving devices havinga drain therein. f a

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

ANDERSON BITTLE PRICE. Witnesses:

G. O. CORBOUGH, J. S. PRICE.

